Conor McGregor knocks out Jose Aldo with one punch (Video)

In a night that featured a few big upsets, it was fitting that reigning UFC champion Jose Aldo was knocked out by his opponent.

Aldo was blasted by Conor McGregor 13 seconds into their featerweight championship fight at UFC 194 in Las Vegas Saturday night. Aldo went in for a combination of punches, but McGregor caught him with a counterpunch that dropped him like a cartoon character that ran through a pane of glass:

Aldo never saw it coming. That was only the second loss of his career and his first since 2005.

Meanwhile McGregor improves to 19-2 after winning his 15th fight in a row.